How much travel? Moots, has been doing short travel pivotless wishbone suspension since 1991 on their titanium YBB frames, and before that on steel. I can remember some KHS softail frames and Litespeed Unicoi frames that also had either a spring or a shock at the wishbone. I don't know what their pivot setup looked like, if there were pivots. The GT LTS was a longer travel and more complicated version of this.